Tongue weakness is one of the most common — and most treatable — components of oropharyngeal dysphagia in older adults. The tongue is a voluntary muscle that follows the same principles as any other skeletal muscle: it can weaken with disuse, age, neurological disease, and radiation; and it can be strengthened with targeted, progressive, overload training. For patients with dysphagia driven partially or primarily by tongue weakness, tongue strengthening is one of the best-evidenced rehabilitation interventions in the entire dysphagia therapy toolbox.
This article walks through why tongue strength matters for swallowing, how to assess it, the main exercise protocols used in speech-language pathology practice, the devices available (IOPI, MOST, TheraBite and related tools), dosing principles from the published RCT literature, and how a realistic home programme looks under SLP supervision. It is written for caregivers, SLPs, rehabilitation clinicians, and family members of dysphagic patients who want to understand what modern tongue rehabilitation actually involves.
The tongue is the primary force generator of the oral phase of swallowing. It performs at least five distinct mechanical functions during a normal swallow:
When any of these functions is weak, swallowing efficiency drops. Specific problems include:
Normal maximum isometric tongue pressure, measured with a tongue pressure device, ranges from 40 to 80 kilopascals (kPa) in healthy adults. Values below 20 kPa are strongly associated with increased aspiration risk in most populations, and this threshold is used as a clinical marker for “tongue weakness requiring intervention.”
Tongue strengthening is evidence-supported for:
Tongue strengthening is not the primary intervention for:
An assessment by a speech-language pathologist with videofluoroscopy or FEES (flexible endoscopic evaluation of swallowing) is needed to determine which component of the swallow is weakest.
Description: With each swallow, the patient is instructed to swallow as hard as possible, squeezing all oral and pharyngeal muscles aggressively. The effort increases tongue pressure, base-of-tongue retraction, and hyoid elevation.
Dosing: Typically 5–10 swallows per set, 3 sets per session, 3 sessions per day.
Evidence: Multiple studies show increased tongue pressure and reduced post-swallow residue after 2–4 weeks of effortful swallow training. It is one of the most widely used exercises in SLP practice.
Use case: Best for patients with mild-to-moderate weakness who can follow instructions reliably and have adequate cognition.
Description: The patient gently holds the tongue tip between the front teeth (about 1 cm protruded) and swallows. This prevents normal tongue movement and forces the pharyngeal wall to work harder, strengthening the posterior pharyngeal wall-tongue base coupling.
Dosing: 10 swallows per set, 3 sets per day.
Evidence: Effective for patients with reduced base-of-tongue retraction, particularly post-stroke and post-HNC. Some studies show increased pharyngeal wall contraction within 2 weeks.
Cautions:
Description: Using a tongue pressure device like IOPI (Iowa Oral Performance Instrument), the patient presses the tongue against a small bulb against the hard palate as hard as possible, holding the squeeze for 2–3 seconds.
Dosing: 10 repetitions per set, 3 sets per session, 3 sessions per day, 5 days per week. Progressive overload — the target pressure is set at ~60–80% of the patient’s maximum pressure, and increased weekly as strength improves.
Evidence: The most rigorously studied tongue strengthening exercise. Robbins et al. (2007) in a landmark RCT showed 8-week IOPI protocol increased tongue pressure by ~30% in post-stroke dysphagic patients and improved swallow safety.
Cost: IOPI devices cost US$1,500–2,500 for clinical use; home-use devices (Madison Oral Strengthening Therapeutic, or MOST) are US$300–500.
Description: Lying flat, the patient lifts the head (without lifting shoulders) to look at the toes, holds for 60 seconds, then rests for 60 seconds. Repeated 3 times. Then 30 fast repetitions of the head-lift.
Dosing: 3 sustained holds + 30 fast reps, 3 times per day, 6 weeks.
Target: This is primarily a suprahyoid muscle strengthening exercise (the muscles that lift the hyoid bone during swallowing), not a pure tongue exercise, but it improves hyoid elevation and upper oesophageal sphincter opening, indirectly benefiting bolus transit.
Evidence: Shaker original RCT showed reduced aspiration in stroke patients. Practical limitation: many elderly patients cannot perform the neck-lifting protocol due to neck pain or weakness. Chin Tuck Against Resistance (CTAR) is a popular alternative.
Description: A modified version of Shaker using a ball or flexible rubber ring placed under the chin against the chest, the patient presses the chin down against resistance.
Dosing: Similar to Shaker — 3 sustained holds (60 sec) + 30 fast reps, 3 times/day.
Evidence: Similar effects to Shaker with better tolerability. Several RCTs show improved swallowing function after 6 weeks.
Use case: Elderly or frail patients who cannot lie flat or perform head lifts.
Description: Using a device like EMST-150, the patient blows against a calibrated resistance valve set at 70–75% of maximum expiratory pressure. 25 breaths, 5 days per week, 5 weeks.
Target: Not direct tongue strengthening, but closely related — EMST improves suprahyoid muscle activity during swallowing and has been shown to improve swallowing safety in Parkinson’s disease.
Evidence: EMST has one of the most consistent evidence bases in dysphagia rehabilitation for Parkinson’s disease, with multiple RCTs showing reduced aspiration and improved cough function.
Cost: EMST devices cost US$30–60 — among the cheapest effective dysphagia training tools.
Regardless of which specific protocol is used, effective tongue strength training follows the same principles as any skeletal muscle training:
The muscle must be challenged at 60–80% of its current maximum to adapt. Training at lower intensities (20–40% of max) does not produce strength gains, only endurance or proprioceptive changes. This is why IOPI-guided protocols (which measure actual pressure) typically outperform non-instrumented exercises — the patient cannot accurately self-judge 70% of max without feedback.
The tongue adapts to the specific movement trained. A protocol that trains maximum isometric tongue-palate pressure will improve that specific measurement; it may or may not transfer to dynamic swallowing performance. This is why combining targeted strength exercises with functional swallowing practice (real bolus swallows) is essential for meaningful clinical benefit.
Most evidence-based protocols use 3 sessions per day, 5 days per week, for 4–8 weeks. Shorter or less frequent protocols may not produce measurable changes.
Without objective measurement, it is very difficult to know if training is working. IOPI or similar pressure devices allow weekly re-testing of maximum tongue pressure, and the training target is raised as the patient improves. Without this feedback loop, patients commonly plateau at intensities below the threshold needed for adaptation.
The tongue, like any muscle, needs rest to adapt. Daily training without rest days is not more effective than 5-days-on-2-days-off, and can produce fatigue-related regression.
For patients without access to specialised devices, reasonable alternatives include:
The cheap options cannot replicate IOPI’s precision but can produce meaningful strength gains with proper supervision. For most care-home populations and lower-income contexts, these are the practical choice.
A common home programme prescribed by SLPs for older adults with mild-to-moderate tongue weakness:
Week 1–2 (baseline and learning):
Week 3–8 (progressive loading):
Week 9–12 (maintenance):
Total time commitment: ~15–20 minutes per session, ~45–60 minutes per day. This is higher than most patients expect and compliance is often the biggest barrier. Realistic home programmes typically achieve 3–5 days per week rather than 7, and results scale accordingly.
Meaningful progress markers:
Without some form of objective measurement, “I feel better swallowing” is not a reliable guide to actual strength gains.
Tongue strengthening is one component of comprehensive dysphagia care, not a standalone solution. If a patient is not making measurable progress after 6–8 weeks of diligent training, escalation is needed:
Tongue strength training is one of the most effective, cheapest, and most universally-applicable rehabilitation interventions for oropharyngeal dysphagia driven by tongue weakness. The core principles are straightforward: progressive overload, 3 sessions per day, 5 days per week, 4–8 weeks, with objective measurement where possible. Devices like IOPI improve precision but are not essential — low-cost alternatives and careful SLP supervision can achieve meaningful gains.
For caregivers and family members supporting a dysphagic patient: do not start a home tongue exercise programme without an initial SLP assessment, because the wrong exercise for the wrong cause can be useless or even harmful. Once a programme is prescribed, the biggest factor in success is consistency — 3 short sessions a day for 6 weeks, with someone reminding and supporting the patient through the protocol. The evidence is strong that patients who complete such programmes make measurable gains; the biggest challenge is keeping compliance over time.
Strength training works. The tongue is not special — it follows the same rules as any other muscle.
This article is part of the Dysphagia Knowledge Hub, a free educational reference on swallowing disorders, dysphagia care, and modified-texture diets. Information here is for education and is not medical advice. For individual clinical questions, consult a speech-language pathologist or physician.